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    41 

    42 #include "s60mediarecognizer.h"

    43 #include <e32def.h>

    44 #include <e32cmn.h>

    45 #include <QtCore/qurl.h>

    46 #include <QtCore/qdir.h>

    47 #include <QtCore/qdebug.h>

    48 

    49 #include <apgcli.h>

    50 

    51 static const TInt KMimeTypePrefixLength = 6; // "audio/" or "video/"

    52 _LIT(KMimeTypePrefixAudio, "audio/");

    53 _LIT(KMimeTypePrefixVideo, "video/");

    54 

    55 S60MediaRecognizer::S60MediaRecognizer(QObject *parent) : QObject(parent)

    56 {

    57 }

    58 

    59 S60MediaRecognizer::~S60MediaRecognizer()

    60 {

    61     m_file.Close();

    62     m_fileServer.Close();

    63     m_recognizer.Close();

    64 }

    65 

    66 S60MediaRecognizer::MediaType S60MediaRecognizer::mediaType(const QUrl &url)

    67 {

    68     bool isStream = (url.scheme() == "file")?false:true;

    69 

    70     if (isStream)

    71         return Url;

    72     else

    73         return identifyMediaType(url.toLocalFile());

    74 }

    75 

    76 S60MediaRecognizer::MediaType S60MediaRecognizer::identifyMediaType(const QString& fileName)

    77 {

    78     S60MediaRecognizer::MediaType result = Video; // default to videoplayer

    79     bool recognizerOpened = false;

    80 

    81     TInt err = m_recognizer.Connect();

    82     if (err == KErrNone) {

    83         recognizerOpened = true;

    84     }

    85 

    86     err = m_fileServer.Connect();

    87     if (err == KErrNone) {

    88         recognizerOpened = true;

    89     }

    90 

    91     // This is needed for sharing file handles for the recognizer

    92     err = m_fileServer.ShareProtected();

    93     if (err == KErrNone) {

    94         recognizerOpened = true;

    95     }

    96 

    97     if (recognizerOpened) {

    98         m_file.Close();

    99         err = m_file.Open(m_fileServer, QString2TPtrC(QDir::toNativeSeparators(fileName)), EFileRead |

   100             EFileShareReadersOnly);

   101 

   102         if (err == KErrNone) {

   103             TDataRecognitionResult recognizerResult;

   104             err = m_recognizer.RecognizeData(m_file, recognizerResult);

   105             if (err == KErrNone) {

   106                 const TPtrC mimeType = recognizerResult.iDataType.Des();

   107 

   108                 if (mimeType.Left(KMimeTypePrefixLength).Compare(KMimeTypePrefixAudio) == 0) {

   109                     result = Audio;

   110                 } else if (mimeType.Left(KMimeTypePrefixLength).Compare(KMimeTypePrefixVideo) == 0) {

   111                     result = Video;

   112                 }

   113             }

   114         }

   115     }

   116     return result;

   117 }

   118 

   119 TPtrC S60MediaRecognizer::QString2TPtrC( const QString& string )

   120 {

   121     // Returned TPtrC is valid as long as the given parameter is valid and unmodified

   122     return TPtrC16(static_cast<const TUint16*>(string.utf16()), string.length());

   123 }